Home/ Questions/Q 1573
Next
Answered
Sneha Thakur
  • 4
Asked: 2020-10-29T05:29:09+00:00 In:

To warn ships for underwater rocks, a lighthouse spreads a red colored light over a sector of angle 80° to a distance of 16.5 km. Find the area of the sea over which the ships are warned. (Use π= 3.14)

  • 4

NCERT Solutions for Class 10 Science Chapter 12
Important NCERT Questions
Areas Related To Circles Class,
NCERT Books for Session 2022-2023
CBSE Board and UP Board Others state Board
EXERCISE 12.2
Page No:231
Questions No:12

2020-2021areas related to circles classcbsechapter 12class10mathematicsncert
Share

    2 Answers

    1. Best Answer
      To warn ships for underwater rocks, a lighthouse spreads a red colored light over a sector of angle 80° to a distance of 16.5 km. Find the area of the sea over which the ships are warned. (Use π= 3.14)

      The light house spreads red light in the form of sector of angle 80°, whose radius is 16.5 km.
      Therefore, the area of sector
      = 80°/360° × πr²
      = 2/9 × π(16.5)²
      = 2/9 × 3.14 × 16.5 × 16.5
      = 189.97 km²

      • 2

    2. Get Hindi Medium and English Medium NCERT Solution for Class 10 Maths to download.
      Please follow the link to visit website for first and second term exams solutions.
      https://www.tiwariacademy.com/ncert-solutions/class-10/maths/chapter-12/

      • 2
    Leave an answer

    Leave an answer

    Browse